As far as I know, you could also release free mods. It wasn't a forced thing. With this system, if a guy wanted to drop his full time job, and do modding full

As far as I know, you could also release free mods. It wasn't a forced thing. With this system, if a guy wanted to drop his full time job, and do modding full time he could if it was popular enough. Now, that would be more difficult. Resulting in less content.